Dozens of dead fish, including threatened species, have washed ashore local Australian beaches, all attributed to a massive toxic algae bloom.

A microalgal bloom created by unusual weather conditions resulted in foam covering South Australian beaches. Dead fish are also washing ashore and beachgoers are reporting feeling sick.

An Australian state closed two beaches after dead fish and an unusual off-white foam washed ashore while surfers reported feeling unwell, officials said on Tuesday. A microalgal bloom created by unusual weather conditions was suspected to have sickened humans and marine life as well as creating the foam that has covered hundreds of meters (yards) of coastline,